Surrey · Heat pump installation
Heat pump installation in Sunbury-on-Thames, Surrey
Heat pump installation, in Sunbury-on-Thames and nearby. Call for a fixed-price quote, and we will reply the same working day.
- Comparing heat pump types
- Checking eligibility for a heat pump grant
- Wanting to stop using oil, LPG or gas for heating
About our air source heat pumps in Sunbury-on-Thames
A heat pump takes heat from the outside air and moves it into your home with electricity running the compressor and fans. It works on the same principle as air conditioning, run the other way and the Energy Saving Trust notes that air-to-air heat pumps are sometimes referred to as air conditioning. The work covers homes heated by oil, LPG or gas, hot water cylinders and air-to-water heat pumps, and common reasons people get in touch are working out whether radiators need upsizing and questions about where the outdoor unit can go.
In a town like Sunbury-on-Thames, most heat pump enquiries are for houses heated by a gas boiler. We survey the heat loss, radiators, hot water and the outdoor unit position, then design the system.
The records are your system’s health record: what was fitted or found, what was done and when. If anything goes wrong later, it helps the next engineer and the manufacturer, so keep it safe.
- Place
- Sunbury-on-Thames (TW16)
- Region
- Surrey
- Prices
- £8,000–£16,000 before the grant, 0% VAT on homes
- Price
- A fixed-price quote up front
- Accreditations
- F-Gas certified, NICEIC approved, MCS
- Phone
- 07833 053749
- Checked
- 30 October 2026
What owners can safely do
Do not move, re-route or disconnect units or pipework yourself. Disconnecting a system means dealing with refrigerant, which only a qualified engineer can do, and the electrics need care too. Ask us to quote for a move instead.
Owner care supports servicing; it does not replace it. Clean filters and a clear outdoor unit help the system run as it should, but the refrigerant circuit, the electrics and the parts you can’t see still need an engineer at the interval the manufacturer recommends.
How it works
Anything involving refrigerant is handled by F-Gas qualified engineers, as the law requires, while the electrical side is covered by our NICEIC approval. On the day, both are in the same hands. The work takes anything from a couple of days for air-to-air to the best part of a week for air-to-water with radiator changes. Pictures of the space, the fuse board and the outside wall are a good start for a job in Sunbury-on-Thames.
- First we find out about the property, the heating you have now and what you’re hoping for.
- On the visit we calculate what every room loses on a cold day, then check the radiators, room for a cylinder and outdoor unit options.
- The price comes back fixed and in writing, with the grant and VAT shown line by line.
- Installation covers the outdoor unit, the indoor connections and the controls.
- The system is commissioned and registered under MCS, and we show you how to use it.
How to prepare
- Tell us about parking and loading
- Unlock any gate, garage or side passage we need
- Have the make and model of any existing unit to hand
Getting a quote
The quickest way to a quote is to send pictures: the room or the existing unit, the outside wall or roof where the outdoor unit sits or would go, and the label on any existing unit. Add the address and what you’d like done, and simple jobs can often be priced without a visit.
Related advice
Homes in Sunbury-on-Thames and heat pumps
VOA council tax data date about 43% of homes in the Sunbury-on-Thames area to the post-war years, 1945 to 1972. Homes of that age often have cavity walls that may or may not be insulated, which the survey checks. Historic England lists about 6 buildings and structures within half a mile of the centre of Sunbury-on-Thames, including Sunbury Manor (grade II). For a heat pump, permitted development does not apply within the grounds of a listed building, and in a conservation area the outdoor unit can’t go on a wall or roof facing a road, so we check with the local planning authority (normally Spelthorne council) where needed.
Hampton Court Palace lies about 3.5 miles east. Owners of listed homes need consent before a heat pump is fitted, so it’s one of our first questions. If your home is near Sunbury station and heated by a gas boiler, an air-to-water heat pump can replace it where the survey shows it suits.
Sunbury-on-Thames is about 7 miles south of Hayes, in Surrey. Whether you’re in the middle of Sunbury-on-Thames or further out, we cover air source heat pumps, from small jobs to large ones. Sunbury-on-Thames is one of 395 towns, villages and districts in Surrey we cover for homes and businesses. You can also see our page for Guildford, about 13 miles away.
The closest recent job we can point to from Sunbury-on-Thames was on Queens Road, Weybridge (KT13), about 3 miles south-west: installing a full-house Mitsubishi Electric multi-split system covering five bedrooms, the study, the sitting room and the kitchen-living area: eight indoor units in total served by two outdoor units.
From Station Road, The Ridings and Ravenscourt to the smaller roads in between, the whole area is covered. If your postcode is in TW16, we can take the job on. Places around Sunbury-on-Thames that are also on our list: Upper Halliford (1 mile south-west), Charlton (1 mile west), Ashford Common (1 mile north-west), Hounslow (1 mile north) and Littleton Common (1 mile west). Further out, we also cover Guildford (13 miles south-west), Woking (10 miles south-west), Camberley (15 miles south-west) and Epsom (8 miles south-east).
Landmarks near Sunbury-on-Thames
We fit and service air conditioning in homes and premises around Sunbury Manor School, The Three Fishes Public House and Sunbury Park. Sunbury-on-Thames has its own railway station: Sunbury station. Other landmarks nearby include Kempton Steam Museum (1 mile north-east) and No. 2 New Zealand General Hospital (2 miles south). The countryside around Sunbury-on-Thames includes St Ann's Hill and Kempton Park Reservoirs.
What air source heat pumps can’t fix
Before booking, it helps to know what’s not included:
- Draught-proofing and insulation upgrades
- Disconnecting or servicing a gas boiler
- Getting planning permission or listed building consent on your behalf
If you’re not sure, just call us on 07833 053749 or drop us a line and we’ll give you a straight answer before booking.
What the work covers
- Radiator systems
- Homes heated by oil, LPG or gas
- Air-to-air heat pumps
- Underfloor heating
- Hot water cylinders
- Air-to-water heat pumps
Places near Sunbury-on-Thames
More services for Sunbury-on-Thames
Common questions in Sunbury-on-Thames
Do you cover Sunbury-on-Thames for air source heat pumps?
Yes. We work across London and the South East from our base in East Grinstead, and Sunbury-on-Thames is part of that. Just phone 07833 053749 or write to us at info@aircondoctor.co.uk with a few details.
Can I get the Boiler Upgrade Scheme grant in Sunbury-on-Thames?
Sunbury-on-Thames is covered, as the scheme runs across England and Wales. For an air-to-water heat pump the amount is £7,500; an air-to-air system can get £2,500 if it replaces the fossil-fuel heating outright, meets the home’s full heating demand and is not an add-on to a boiler. You do not apply yourself: the MCS certified installer does, which is us.
How does the warranty work?
It’s the manufacturer’s warranty, which varies by brand. Daikin, for instance, gives a standard 2 years on split air conditioning and we explain the terms for your brand on the quote.
Whose job is it to check the system for leaks?
The operator of the equipment, working with qualified engineers. Systems below 5 tCO2e fall outside the set leak check intervals, while larger ones need checks at least every 12 months, or every 6 months from 50 tCO2e. We will work out which band applies to yours.
Are my radiators big enough for a heat pump?
Some radiators may be fine as they are, and some may need to be larger. At the lower temperatures a heat pump uses, radiators need more surface, and the survey checks each one.
How much does an air source heat pump cost?
Air-to-water systems are £8,000–£16,000 (0% VAT on homes), before any grant. Your price depends on the survey, the emitters and the hot water and the quote is fixed.
Which manufacturers do you install and repair?
The main ones, including Mitsubishi Electric, Daikin, Fujitsu, Panasonic, Toshiba, LG, Samsung, Mitsubishi Heavy Industries and Hitachi. For new systems, we recommend a brand and model to suit the job and tell you why.
Why deal with it now?
The extra £1,500 for homes heated by oil or LPG with no mains gas is available until March 2027. For homes that qualify, that is a reason to look into it now. A system that’s left with a fault, or without a service, typically costs more to run.
Typical ranges are on our prices page, but each job is priced on what it involves. For a fixed-price quote, ring 07833 053749 or use the quote form, and we’ll explain what it covers.
What you get with us
- 24/7 emergency line for breakdowns
- Members of Checkatrade
- A site survey and a fixed-price quote
- Manufacturer’s warranty terms explained on your quote
A customer’s words
“Office air con broke down in the July heatwave. Called at 8am, engineer was here by noon and fixed within 2 hours. Brilliant emergency response. They now hold the service contract for the whole building.”
James T., Crawley, office manager